Abstract: Described herein are various embodiments of differential air pressure systems and methods of using and calibration such systems for individuals with impaired mobility. The differential air pressure systems may include an access assist device configured to help a mobility impaired user to stand in a pressure chamber configured to apply a positive pressure on a portion of the user's body in the sealed pressure chamber. The system may also include load sensors configured to measure the user's weight exerted inside and outside the chamber. The system may be calibrated by determining a relationship between the actual weight of the user and the pressure in the chamber, where the actual weight of the user may be measured by more than one load sensor and at least one load sensor is not in the pressure chamber.

Abstract: Described herein are various embodiments of differential air pressure systems and methods of using such systems. The differential air pressure system may comprise a chamber configured to receive a portion of a user's lower body and to create an air pressure differential upon the user's body. The differential air pressure system may further comprise a user seal that seal the pressure chamber to the user's body. The height of the user seal may be adjusted to accommodate users with various body heights.

Abstract: A differential air pressure system has a pressure bag with windows and preferred folding configuration such that when the bag is folded no window is folded. The pressure bag is supported by a lift support that is proximal to a user control panel and adjacent to or nearly adjacent to the user who is coupled to the pressure bag. A treadmill base for use with differential air pressure equipment is provided. There are various improvements provided to adapt the operations of the DAP system via the use of separate pressure volume and non-pressure volume portions of the treadmill base. Various improvements to serviceability and repairs are provided by placement of components outside of the pressure volume portion or by providing one or more pressure volume access points.

Abstract: Described herein are various embodiments of differential air pressure systems and methods of using such systems. The differential air pressure system may comprise a chamber configured to receive a portion of a user's lower body and to create an air pressure differential upon the user's body. The differential air pressure system may further comprise a user seal that seal the pressure chamber to the user's body. The height of the user seal may be adjusted to accommodate users with various body heights.

Abstract: A differential air pressure system has a pressure bag with windows and preferred folding configuration such that when the bag is folded no window is folded. The pressure bag is supported by a lift support that is proximal to a user control panel and adjacent to or nearly adjacent to the user who is coupled to the pressure bag. A treadmill base for use with differential air pressure equipment is provided. There are various improvements provided to adapt the operations of the DAP system via the use of separate pressure volume and non-pressure volume portions of the treadmill base. Various improvements to serviceability and repairs are provided by placement of components outside of the pressure volume portion or by providing one or more pressure volume access points.

Abstract: An unweighting system includes a frame having a pair of upright bars, and a cantilevered arm assembly, and a pair of resilient members. The frame is configured to connect to or at least partially encircle an exercise device. The cantilevered arm assembly includes a pair of cantilevers. Each cantilever is attached to one of the upright bars, and the pair of cantilevers is configured to receive and couple to the user to unload a portion of the user's weight as the user exercises on the exercise device while coupled to the pair of cantilevers.

Abstract: An unweighting system includes a frame having a base and a vertical bar extending therefrom. The base is configured to connect to or at least partially encircle an exercise device. A height adjustable cantilevered arm assembly is coupled to the vertical bar at a fulcrum, and the cantilevered arm assembly is configured to receive and couple to the user. A resilient member is coupled to the cantilevered arm assembly and configured to unload a portion of the user's weight while the user is coupled to the cantilevered arm assembly and exercises on the exercise device.

Abstract: An unweighting system includes a frame having a base and a vertical bar extending therefrom. The base is configured to connect to or at least partially encircle an exercise device. A height adjustable cantilevered arm assembly is coupled to the vertical bar at a fulcrum, and the cantilevered arm assembly is configured to receive and couple to the user. A resilient member is coupled to the cantilevered arm assembly and configured to unload a portion of the user's weight while the user is coupled to the cantilevered arm assembly and exercises on the exercise device.

Abstract: Described herein are various embodiments of differential air pressure systems and methods of using such systems. The differential air pressure system may comprise a chamber configured to receive a portion of a user's lower body and to create an air pressure differential upon the user's body. The differential air pressure system may further comprise a user seal that seal the pressure chamber to the user's body. The height of the user seal may be adjusted to accommodate users with various body heights.

Abstract: A differential air pressure system has a pressure bag with windows and preferred folding configuration such that when the bag is folded no window is folded. The pressure bag is supported by a lift support that is proximal to a user control panel and adjacent to or nearly adjacent to the user who is coupled to the pressure bag. A treadmill base for use with differential air pressure equipment is provided. There are various improvements provided to adapt the operations of the DAP system via the use of separate pressure volume and non-pressure volume portions of the treadmill base. Various improvements to serviceability and repairs are provided by placement of components outside of the pressure volume portion or by providing one or more pressure volume access points.

Abstract: Described herein are various embodiments of differential air pressure systems and methods of using such systems. The differential air pressure system may comprise a chamber configured to receive a portion of a user's lower body and to create an air pressure differential upon the user's body. The differential air pressure system may further comprise a user seal that seal the pressure chamber to the user's body. The height of the user seal may be adjusted to accommodate users with various body heights.

Abstract: An unweighting system includes a frame having a base and a vertical bar extending therefrom. The base is configured to connect to or at least partially encircle an exercise device. A height adjustable cantilevered arm assembly is coupled to the vertical bar at a fulcrum, and the cantilevered arm assembly is configured to receive and couple to the user. A resilient member is coupled to the cantilevered arm assembly and configured to unload a portion of the user's weight while the user is coupled to the cantilevered arm assembly and exercises on the exercise device.

Abstract: An unweighting system includes a frame having a pair of upright bars, and a cantilevered arm assembly, and a pair of resilient members. The frame is configured to connect to or at least partially encircle an exercise device. The cantilevered arm assembly includes a pair of cantilevers. Each cantilever is attached to one of the upright bars, and the pair of cantilevers is configured to receive and couple to the user to unload a portion of the user's weight as the user exercises on the exercise device while coupled to the pair of cantilevers.

Abstract: Described herein are various embodiments of differential air pressure systems and methods of using such systems. The differential air pressure system may comprise a chamber configured to receive a portion of a user's lower body and to create an air pressure differential upon the user's body. The differential air pressure system may further comprise a user seal that seal the pressure chamber to the user's body. The height of the user seal may be adjusted to accommodate users with various body heights.

Abstract: Described herein are various embodiments of differential air pressure systems and methods of using such systems. The differential air pressure system may comprise a chamber configured to receive a portion of a user's lower body and to create an air pressure differential upon the user's body. The differential air pressure system may further comprise a user seal that seal the pressure chamber to the user's body. The height of the user seal may be adjusted to accommodate users with various body heights.

Abstract: A microprocessor controlled bellows-type pump system for the precise and accurate pumping and dispensing of fluids. The pump comprises a longitudinally contracting bellows which is supported from warping under fluid pressure by a support bushing in contact with the inside folds of the bellows. A stepper motor drives the bellows position via a lead screw. A system of four valves: a dispense valve, shut-off valve, vent valve, and suck-back valve, control fluid routing within a manifold. One or two pressure transducers allow the microprocessor to control valve positions and stepper motor turning for well behaved dispensing operations.